What is the term used for a frame that supports a boom and is hinged at or near the boom hinge?

The term used to describe a frame that supports a boom and is hinged at or near the boom hinge is referred to as the boom mast. The boom mast provides a pivotal point of support for the boom, allowing for controlled movement and stability during operation. It’s essential for maintaining the proper alignment and positioning of the boom, ensuring that it can maneuver effectively while handling loads.

In various lifting and construction equipment, the boom mast plays a critical role in the overall functionality of the mechanism. It connects the boom to the machine's structure, enabling the boom to extend and retract while distributing the forces acting on it during operation. Understanding the function and importance of the boom mast is crucial for safety and efficiency in lifting operations.

Other terms listed do not accurately describe this specific component. A support frame typically refers to a generic structural component used for various purposes, a counterweight is designed to balance the load but does not provide direct support to the boom, and a stabilizer is used to enhance stability but does not serve as the main supporting structure for the boom itself. Therefore, boom mast is the most precise and appropriate term for this function.